Responsive Lightbox & Gallery <= 2.7.9 - Authenticated (Editor+) Stored Cross-Site Scripting via Comment Content 'title' Attribute
Summary
| CVE | CVE-2026-103897 |
|---|---|
| State | PUBLISHED |
| Assigner | Wordfence |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-10-10 07:16:40 UTC |
| Updated | 2026-10-10 07:16:40 UTC |
| Description | The Responsive Lightbox & Gallery plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'comment' parameter in all versions up to, and including, 2.7.9 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with editor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Exploitation requires the plugin's 'Comments' lightbox setting to be enabled (disabled by default), a moderator to approve the injected comment, and a site visitor to click the affected image to open the lightbox. |
Risk And Classification
Primary CVSS: v3.1 4.4 MEDIUM from [email protected]
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N
Problem Types: CWE-79 | CWE-79 CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Primary | 4.4 | MEDIUM | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N |
| 3.1 | CNA | DECLARED | 4.4 | MEDIUM | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
HighPrivileges Required
HighUser Interaction
NoneScope
ChangedConfidentiality
LowIntegrity
LowAvailability
NoneCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Dfactory | Responsive Lightbox Gallery | affected 2.7.9 semver | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| plugins.trac.wordpress.org/changeset/3694843/responsive-lightbox/trunk/includes/class-fr... | [email protected] | plugins.trac.wordpress.org | |
| www.wordfence.com/threat-intel/vulnerabilities/id/5bb2a893-d254-42bc-8b50-2a883... | [email protected] | www.wordfence.com | |
| plugins.trac.wordpress.org/browser/responsive-lightbox/tags/2.7.9/includes/class-fronten... | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/responsive-lightbox/tags/2.7.9/includes/class-fronten... | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/responsive-lightbox/tags/2.7.9/includes/class-fronten... | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/responsive-lightbox/tags/2.7.9/assets/glightbox/gligh... | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/changeset/3729072 | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/responsive-lightbox/tags/2.7.9/includes/class-fronten... | [email protected] | plugins.trac.wordpress.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Jakub Herman (en)
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| CNA | 2026-10-01T14:06:11.000Z | Vendor Notified |
| CNA | 2026-10-09T17:33:45.000Z | Disclosed |
There are currently no legacy QID mappings associated with this CVE.